polr OLS omitting coefficients?

[whybin]

Hi, I hope this is straight forward.

I am running an ordinal logistic regression test using the following code:

polr(formula = ordered(as.factor(df$measures.protection)) ~ df$primary.residence + 
    df$age, Hess = TRUE)

It works fine, but the output seems to be omitting the first group of each IV.

Output:

For age, there is also a "26-35" group, and primary.redident should have a "No" coefficient.

Am I just reading this entirely wrong? I've watched many videos and they all seem to get every group within the coefficients section.

[startz]

Remember that you can't have more than one complete set of dummies because of perfect multicollinearity problems. (This may or may not be the issue you're seeing.)